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copied!<p>The Manning book <a href="http://www.manning.com/bauer2/" rel="noreferrer">Java Persistence with Hibernate</a> has an example outlining how to do this in Section 7.2. Fortunately, even if you don't own the book, you can see a source code example of this by downloading the JPA version of the <a href="http://downloads.jboss.org/hibernate/caveatemptor/" rel="noreferrer">Caveat Emptor</a> sample project (direct link <a href="http://downloads.jboss.org/hibernate/caveatemptor/caveatemptor-jpa-061211.zip" rel="noreferrer">here</a>) and examining the classes <code>Category</code> and <code>CategorizedItem</code> in the <code>auction.model</code> package.</p> <p>I'll also summarize the key annotations below. Do let me know if it's still a no-go.</p> <p>ParentObject:</p> <pre><code>@Entity public class ParentObject { @Id @GeneratedValue @Column(name = "parentId", nullable=false, updatable=false) private Long id; @OneToMany(mappedBy="parent", fetch=FetchType.EAGER) @IndexColumn(name = "pos", base=0) private List<ObjectChild> attrs; public Long getId () { return id; } public List<ObjectChild> getAttrs () { return attrs; } } </code></pre> <p>ChildObject:</p> <pre><code>@Entity public class ChildObject { @Embeddable public static class Pk implements Serializable { @Column(name = "parentId", nullable=false, updatable=false) private Long objectId; @Column(nullable=false, updatable=false) private String name; @Column(nullable=false, updatable=false) private int pos; ... } @EmbeddedId private Pk id; @ManyToOne @JoinColumn(name="parentId", insertable = false, updatable = false) @org.hibernate.annotations.ForeignKey(name = "FK_CHILD_OBJECT_PARENTID") private ParentObject parent; public Pk getId () { return id; } public ParentObject getParent () { return parent; } } </code></pre>

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